The door opened to reveal a... Laboratory of sorts. There were all sorts of dangerous looking devices around so Homura entered with care, shifting her machinegun so it wouldn't knock against anything.

The smell of vapors was quite putrid through.

"...I would hazard to guess on human experiments for the moment," Homura commented, as a hypothesis on the killer's motives. Her eyes spotted the blood trail again, she nodded to Naoto to proceed.

...What they found at the end was...